Spring cushion construction



Nov. 5, 1940. H MENGE 2,220,577

' SPRING CUSHION CONSTRUCTION Filed Sept. 13, 1937 [N V EN T 0R Clare/706 Me/ A TTORNE Vs,

40 templates the provision of a cushion structure in t maintam'its rectangular form and rigidity 40 Patented Nov. 1940 I V I V UNITED STATES PATENT OFFICE, f

.' h 4 2.22am I l signor to The Murray Corporation 0! America, Detroit, Mich., a corporation of. Delaware Application September 13,1937, Serial No. 163,564

6 Claims. c1. 135-179) This application is a continuation in part or the arcs of the respective suriaceslie at right. the co-pending application of Clarence H. Menge, angles to each other. a Serial No. 44,697, filed October 12, 1935 which e Other objects-of the invention will become matured into Patent No. 2,116,402, issued May' apparent from the following specification, the

5 3, 1938. The present inve tion relates generally drawing relating thereto, and from the claims 5 to cushion construction.- ore particularly the hereinafter set forth.

present invention relates to resilient spring mm In the'drawing in which like numerals are used struction for use in cushions. to designate .iike parts inthe several views- In order. to obtain a full and complete under throughout: 1 1 0- standing of the invention disclosed herein, ref- Figure 1 is a pe p VieW a Cushion Cell- 10 erence may be had to the Kaden' Patent No. struction embodying features of the present in.- 2,002,3'99, which relates specifically :to the type vention; 1 of spring element used in connection with the Fig.- 2 is an enlarged fragnientary view show-1 present invention. Springs of the type disclosed the manner in which the terminal e in the Kaden patent are formed of a section of t surfa spri s are s cur d in t o e 15 spring wire bent to .a series of similar adjacent Wife o e c h sp gi ust flted ii- 1; lateral convolutions all lying in substantially Fig. 3 is a perspec i e View Of a modified form a single surface. In ordento obtain maximum of cushion construction e y g f t 0 resiliency when using springs of this'type, it i the present invention; necessary that the elements as a whole be bent 4 e Side elevation? View, the 0115111011 20 on an arc of relatively small radius and normal- Spring construction shown in Fig; ized to this curve. Whervthe spring l m is Fig. 5 is an enlarged fragmentary perspective used. the element as. a wholeis tensioned until w ust n e an e i which e ter-n the arcuate shape thereof lies in an arc of subminel ends Of'the surface p Secured stanti'ally greater radius than when the Spring is the border frame element in the structure il1us 5 in normal condition in order that the resilience 3 a d a of the djacent convolutions of thexspring ele- 6 is'a ton-pl nvi of e st u e i ment w'- be supplemented by the resilience of trated in Fig. 5. i

the arcuate structure as awhole. Referring to the drawing andreferrin P It is a general object of the present invention 1 3? to Figs- 1 and 2 an e bodi ent of t e 0 to provide a construction for a'cushion embodyin present invention'is illustrated in which a cush-- spring elements of the type dis in the .ion is provided with a single marginal border wire den patent referredto above. element l0 which is substantially rectangular A more particular object of the present inveniii shape. The border wire element I0 is substantion consists in the provision of a cushion uticylindrical in i and has a 35 'lizing springs of the'type shown in the -tinuous channel l2 cut vtherein throughout its patent which will be reversible andwhich have length This bmierwire element Pmferably similar resilient surfaces on both sides thereof. tends completely around and defines the'mel'r A further object of the present inventionco'ngma'l edge-of the cushion construction? In rder which ,a single frame element is used for su frame t igmqerably sup porting the prings constituting the resilie t ported by element H which is suriaces on both sides of the cushion spring contamed 9 relatively small gauge d has stmction; c its endsbent laterallyand crimped into the chan- A further object or the present invention is gi g each 3 the to provide a cushion having resilient surfaces on both sides in which the elements ermine eon.fil. i i ihitiifitiiieifiiilififii 333 faces on the respective sides are disposed across mm the inwardly presenting j n f e v .the rrame at to each border wire 10 springs |6.con stitute an arcuate spring surface on oneside-ot .'A further object is to provide a cushion conthe cushion and'a similar arcuate spring surface Istruction having novel and advantageous uses is provided on. the other side of the cushion by" which has one arcuate spring surface and an opmeans of a similar-series o1 arcuate-sinuous p s y disposed arcuate Spring f e in w ch spring elements l8, each or which also has one, 55

half of its last lateral convolutions similarly crimped into the same inwardly'presenting channel l2 of the border wire ID. This is shown in detail in Fig. 2.

In the embodiment illustrated in Figs. 1 and 2 the spring elements 16 and I8 extend in the same direction relative to the border frame l0 so that the curvature of the spring surfaces is substantially the same for both sides of the cushion.

This cushion construction is relatively simple to manufacture, and is highly resilient, due to the arcuate form of the spring elements [6 and I8. The spring elements l6 and I8 are preferably formed when manufactured to a curvature of relatively small radius, and at the time they are imported into the border wire [0 they are tensioned to arcs of substantially greater radius in order that their inherent resiliency will thus be materially increased.

Referring to Figs. 3 to 6 a modified structure is illustrated in which curved spring surfaces are provided on the opposite sides of a single border frame member and in which the curvature of one of the spring surfaces is on an arc in one direction across the frame member and the curvature of the other spring surface is on an are at substantially a right angle to the arc of the first spring surface.

A border frame element I9 is provided which is preferably substantially rectangular in shape and is preferably formed of sheet metal of rolled sections which may conveniently be formed in a continuous length. The border frame element I9 is generally of channel section and is provided at substantially uniformly spaced points throughout its length with upraised portions 20 in the base thereof, which upright portions are preferably spaced apart from each other a distance slightly less than the transverse width of the last lateral convolution of the spring element l6 which the channel is adapted to secure in position. The walls of the channel are crimped together at points 2| disposed substantially midway between the upraised portions 20 of the base of the channel thus providing tunnels between these upraised portions which tunnels are adapted to receive and anchor the last lateral convolution of the spring elements in position within the channel.

In order to brace the border frame l9, transversely extending bracing elements 22 and 24 are provided which are arranged at right angles to each other and which have their respective ends anchored in the border frame element 19 in substantially the same manner as the spring elements I6 are anchored therein.

The spring elements 16 form one of the spring cushion surfaces and are so disposed that they provide a spring surface on an arc extending across the frame in one direction. The spring elements l8 form the oppositely disposed spring surface and are soarranged as to provide a spring surface on an arc at substantially a right angle to the arc of the spring surface formed by the elements l6. By so arranging the spring elements I6 and I8 relative to each other the cushion construction provided has advantageous uses in that the supporting surface formed by the elements I6 is properly positioned by the surface formed by the elements II.

The elements'li and I8 are secured in the border frame element I 9 in the same manner and the structure for so assembling the spring elements to the border frame element I! has the advantages of ease and security of assembly.

- ponent parts, it will be seen that the spring elements will be firmly anchored in place. The upraised portions 20 of the channel base preclude longitudinal movement of the anchored convolution with respect to the channel and the crimped in portions preclude displacement of the convolutions with respect to the channel.

Formal changes may be made in the specific embodiments of the invention described without departing from the spirit and substance of the invention, the scope of which is commensurate with the appended claims.

What is claimed is:

1. In a cushion construction, a frame member surrounding the marginal edge of the cushion and having an inwardly presenting channel section, and sinuous arcuate spring members having their ends anchored in said channel and forming resilient surface structures on both sides of said cushion, the ends of the springs on the top and bottom side oilthe frame being oppositely disposed and substantially abutting.

2. In a cushion construction, a frame member surroundingthe marginal edge of the cushion and having an inwardly presenting channel section, and sinuous arcuate spring members having their ends anchored in said channel and forming resilient surfaces on both sides of said cushion, said spring members being aligned on opposite sides of the frame and tensioned to lie along arcs of greater radius than that which they would normally assume with the ends of aligned spring oppositely disposed and substan-' tially abutting.

3. In a cushion construction, a frame element,

ends oppositely disposed and substantially abuttime.

4. A cushion construction, having a spring surface and padding on both sides including, in combination, a frame element of inwardly presented channel section, strips of arched zig-zag springs on both sides of the frame having their ends secured in the channel along oppositely disposed edges of said frame and anchored thereto., the

ends of the springs on opposite sides of said frame being substantially aligned with the ends oppositely presenting and substantially abutting.

5. A cushion construction, having a spring surface and padding on both sides including. in combination, a. frame element of inwardly presented channel sections, strips of arched zig-zag springs on both sides of the frame having their ends anchored thereto,-and a brace extending across the opposite sides of said fr me to provide strength thereto against deflect on.

6. A cushion construction, having a spring surface and padding on bothsides including, in combination, a frame element of inwardly presented channel sections, strips of arched zig-zag springs on both sides of the frame having their ends secured in the channels along oppositely disposed edges of said frame and anchored thereto, the ends of said strips being substantially abutting in said channel to have said strips sub- 5 stantially aligned on opposite sides of said frame CLARENCE H. MENGE. 

